Car-body bolster



Patented Dec. 12

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L; K. JEWETT. OAR BODY BOLSTER.

Auv. TH! NATIONAL Lnuoamwmna cor lp UNITED STATES PATENT Enron.

LUTHER K. J EWETT, OF BOSTON, MASSACHUSETTS.

CAR-BODY BOLSTER.

SPECIFICATION forming palt of Letters Patent No. 510,429, dated December12, 1893.

Application filed April 3, 1893. Serial No. 468,894- (No model.)

To all whom it may concern:

Be it known that I, LUTHER K. J EWETT, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented a new and useful Car-Body Bolster, of which the followingis a specification.

My invention relates to car body-bolsters designed for use under cars.

It has for its object, a strongly constructed bolster of openconstruction, and means for fastening the bolster to the car sillswithout appreciably weakening the sills, the whole being easily made andreadily secured in position.

Figure 1 represents the car body bolster fastened to the car sills. Fig.2 is a front elevation of Fig. 1. Fig. 3 is an end elevation of Fig. 1.Fig. 4 represents in side elevation one of the center posts. Fig. 5 is aplan of Fig. 4.. Fig. 6 represents in side elevation one of theintermediate posts. Fig. 7 is a plan of Fig. 6. Fig. 8 represents one ofthe end blocks in side elevation. Fig. 9 is a plan of Fig. 8. Fig. 10represents the car body in end elevation, same as Fig. 3, except thatthe angle piece, which is fastened to the bolster, extends beyond thesides of the bolster, and through the extended portions pass thevertical bolts used to fasten the bolster to the car sills. Fig. 11represents in elevation a detached portion of the car body bolster andone of the intermediate sills, illustrating the method of construction,where U shaped pieces instead of angle pieces are used.

The car body bolster represented by the drawings is one designed for useunder steam railway cars, and all parts or members are preferably madeof steel.

The truss bolster 19 is of the (commonly known) queen post construction,and it is composed of the upper member 20, lower member 21, the twocenter posts 22, the two intermediate posts 23, and the two end blocks24, all these parts being riveted together as shown by the drawings andover each post and block is riveted an angle piece or sill plate 25. Therivets used in rivetingthe bolster together, may be used as shown, tofasten the angle pieces to the upper member of the truss, or if desiredthe angle pieces may be electrically welded to the bolster. These anglepieces or angle sill plates are used as an improved means of fasteningthe bolster to the car sills, by means of the horizontally placed bolts26, which, by passing through the neutral fiber of each sill does notmaterially weaken the sill. If desired, the angle sill plates may extendbeyond the sides of bolster as represented by Fig. 10, the verticallyplaced bolts 27 passing through the center of the sill, this being theusual construction, thereby materially weakening the sill, or instead ofthe angle piece, may be used the U shaped piece, as represented by Fig.11. If a particularly strong construction is desired the angle piecesmay extend the entire length of the car or sill.

The sills represented are of the usual size and arrangement and may bedesignated as follows: side sills 28, center'sills 29 and intermediatesills 30.

It will be noticed that the lower portion of each angle, is embedded inthe sill as a means of resisting the endwise thrust of the angles, towhich in use, they are subjected. It will also be noticed that therivets are provided with countersunk heads wherever desirable ornecessary in order to fully permit the attachment to the bolster of thevarious parts, as shown by the drawings, and alsoto readily permit thefastening to the bolster the usual and common side bearings and centerplate which are not shown.

My car body bolster presents many advantageous features. It is of astrong open truss construction and when the parts composing the bolsterand sill plates are riveted together the bolster may be considered andhandled as a single piece.

In operation it is designed to successfully resist the injurious strainsand shocks to which it. is subjected.

What I claim as new, and desire to secure by Letters Patent, is

1. A car body bolster of truss construction, composed of an upper and alowermember with posts and end blocks between the members, incombination with the angle sill plates, substantially as set forth.

2. A car body bolster comprising an upper and a lower member, to whichare fastened the posts and sill plates, said sill plates beingconstructed, as shown, so as to permit the use of the horizontallyplaced bolts 26, sub- In testimony whereof I have signed my stantiall yasand for the purposes set forth. name to this specification in thepresence of lo 3. In a, car body bolster the combination of twosubscribing witnesses.

the following elements, all of which are se- 1' T r eurely rivetedtogether: upper member 20, LUTHER ET lower member 21, center posts 22,interme- Witnesses:

cliate posts 23, end blocks 24, and angle pieces E. FRANK. WOODBURY,

or sill plates 25, substantially as described. CHARLES L. ELLISS.

